Most editors distinguish between publication of material in a final form, which constitutes an undesired prior publication, and publications that do not amount to a prior publication because they report work in progress. A subsequent manuscript reporting the final data and conclusions will still be interesting for their readership. Additionally, certain practices, eg, presentations at medical meeting, publication of meeting abstracts, and circulation of draft manuscripts to colleagues, are recognized as important to science and viewed as not constituting proper publication. The advent of mass media reports of meetings complicated but did not destroy this idea.6 The emergence of e-prints, which are preliminary versions of papers posted on Web sites and accessible by everybody, however, stretches the concept to its limits, and beyond them for some journals. Press releases are another “knotty” problem for journals.